esfishdoc

You will likely be disappointed in what is offered by anyone who will be reselling it. Your best bet will be to sell it yourself to a private buyer.

If you have 4 shoots and someone is paying, you need a camera. I would be renting or borrowing asap if you can't buy one outright. Not sure where you are but in the USA Lensrental.com would be my go to place. For you current camera what can you do? Change cards. Turn off... back on. Try a different battery. Even if it starts working properly can you depend on it? Your main camera is gone and your backup is malfunctioning. The help you need is renting or borrowing a camera. Richard

I'll share my opinion and make some generalizatios. A focal length of 400mm is where I'd start out as a minimum. I actually own 3: 100- 400L (old push pull focus), 400 5.6L and the new 100-400L II. The new 100-400L makes the other two obsolete for me and I'll sell them when I get around to it. The image does not begin to degrade in quality as the focal length goes up. Many a day I wish I had a 600 or even 800mm. Now.. if you start adding converters there will be image degradation but the only thing that degrades when going to a 600L is your financial situation. It always comes down to budget. How much can you spend? Here is an image of taken with the 100-400L II. I'm not sure what you mean by preferring a lens with manual focus. I've never seen push pull focus but the old 100-400 has push pull zoom. Manual focus is always present. So is AF. Regards, Richard M. Hatch esfishdoc.smugmug.com

My 24-70 is my most used lens by far. My 16-35 is my least used lens. Only you can decide by using them. You can't think your way through to the correct answer for you.

<p>Greetings,<br> I've been quite silent lately on forums and on all things gear related, but this question caught my attention.<br> Here are my thoughts. First off, I don't have that lens but I have the 24-70L and it is my main lens for about 7 years now. For me I don't feel I need IS in that range. If I can't hand hold a shot I use a tripod or flash. With my Canon 5D III I feel comfortable shooting at an ISO of 1600 2.8 at 1/40th handheld.<br> The 24-70L II is probably the sharpest zoom ever in that focal length. In a good, better, best rating it is the "best". It is priced at best also. (I want one but I don't need one so it hasn't reached my impulse buy button yet).<br> Let's say a new 24-70 2.8L II costs 1799 after rebate (B and H) and a used one will sell at the high end for 1225 (lensrentals). Will you get better pictures compared to a used 24-70 2.8L version I (lets say 800 dollars)? My answer: Most definitely probably not... why? Hand held in low light at 2.8 with marginal shutter speeds is not going to look any better at the end of the day. The lens has potential to be better but you have to use it in a way to achieve that potential. Will it be better with flash and strobes and on a tripod or at higher shutter speeds hand held.. yes it will. But do you need it and will you appreciate it and is it worth paying extra for? <br> Here is a "snapshot" in low light with my 24-70L .. 52mm 1/25 hand held.. <br> Why would I buy the version II? 1. If I really felt I needed something a bit sharper than what I get from my version I. For now.. I have too many other things I want. 2. If my current lens breaks or gets seriously injured. 3. Once I have about 3 other lenses that I want.<br> Using a lens at 2.8 has an advantage over an f4 when it comes to a narrower depth of field. I really like that about my lens. When I've needed a bleeding edge low light lens I've rented a Canon 85 1.2L but I've never felt a need to own one.<br> I highly suggest reading this:<br> http://www.lensrentals.com/blog/2013/01/canon-24-70-f4-is-resolution-tests<br> Questions?<br> Regards<br> Richard</p> <p> </p>

<p>Hmmm... I would say the answer is never. Now if there is a problem then I would ask about that. With DSLR's I subscribe to the "if it ain't broke, don't fix it" method. <br> Richard</p>

<p>Greetings,<br> First off... I've never been to Africa to shoot wildlife... but I've considered it and done some reading. <br> I've used and own some of the lenses you ask about. I currently own a 100-400L and a 400 5.6L and I've owned a 300 2.8 and a 300 f4. Of those lenses the 100-400 would be my first choice for the task. Does it produce the sharpest images of the bunch? No.. but very close. Does it do things the other lenses can not? Yes it does! Would I rather have the version II of the 100-400L? Yes... If I were going to buy one new I'd spend the extra money of on the newer version. Do I think I'd be able to see the difference in my final product? Probably not in the majority of them but since I mostly shoot hand held I think I'd increase my keepers at the fringes of light as it has better IS. <br> The fixed focal length at 300 and 400 are great when subjects cooperate but from what <em>I've read</em> about game parks in Africa a zoom is much preferred. I really miss IS on the 400 5.6. It takes getting used to the image shaking around.<br> I've read good things about the Tamron 150-600.<br> Here is something just out on the new 100-400L worth reading.<br> http://www.lensrentals.com/blog/2015/02/canon-100-400-is-l-mk-ii-teardown-best-built-lens-ever<br> I tend to be rough on gear. I push weather conditions a bit far. I bump into things. I'm embarrassed to say I've had cameras and lenses roll out of the truck when a back door is opened (I can think of 3 times.. I get in a hurry sometimes). I'm constantly around salt water. I like things that are stout and sturdy and the new 100-400 is looking like it might be just that.<br> Of the Canon lenses the used 100-400L is likely the best value. If I had to choose between that and the Tamron 150-600 I'd spend 100 dollars and rent it for a handful of days to see how it is.<br> It sounds like you have plenty of time. Get a lens now! Find out now if you love it or hate it. Buy used... sell it if it isn't for you.. move on. Spend a lot of time with your gear before the trip so you are at ease with the equipment. <br> Regards,<br> Richard</p> <p> </p>